Reversing-valve mechanism



Nav. 3, 1925.

J.A.MURPHY REVERSING VALVE MECHANISM Filed July 5. 1922 2 Sheets-Sheet 1 Ill IIL Nov.` 3, 1925.-

1,560,287 J. A. MURPHY 2 lREVERSINGr VALVE -llEGI-IANISII Filed July 3. 1922 2 Sheets-Sheet 2 Patented Nov. 3, 1925,

UNITED STATES ,PATENT oFElcE.

JOHN A. MURIHY, OF ST. LOUIS, MISSOURI, .ASSIGNOR TO SCULLIN STEEL CO., OF

ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI. y

REVERSING-VALVE MECHANISM;

Application filed July 3,

To all 'whom it mary concern.'

Be it known that I, JOI-IN A. MURPHY, a citizen of the United States, residing at St. Louis, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Reversing- Valve Mechanism, of which the following isa specification.

This invention relates to a new and im proved reversing valve mechanism and more particularly to a mechanism for operating reversing valves of the type in use witi open hearth furnaces and the like.

movement of these valves requires an up-` ward lift so that the edge of the hood may` be lifted from the water to clear the rims of the openings and further requiresa horizontal movement to bring the hood in registration with the desired openings. This composite movement has been accomplished heretofore either by rock arms or by supportingl the hood upon rollers running upon a track having elevation'sand depressions In either case, no direct.` lift is given, but the upward movement is formed therein.

given simultaneously with a portion of the horizontal movement. Valve hoods moving f in this manner require that the rims surrounding the openings be relatively low iny order that they may be cleared by the hood. These rims are subjected to the wear of the flow of hot gases and are eroded com` paratively rapidly. Where the rims are low, replacement of the entire rim casting is necessary at 'short intervals.

It is an object of the presentv invention to provide an operating mechanism for valves of this type adapted to lift the valve ver- 21 tically before giving it the required horizontal movement.

It is a further object to so cib-ordinate the .the air or gas.

1922. Serial N0. 572,358.

means accomplishing the two movements that the horizontal move-ment will Aautomatically take place when proper vertical i clearance is accomplished.

It is also an object to provide a mechanism of this character which is simple in construction and operation and adapted for commercial application at relatively low cost.

Other and further objects will appear as the description proceeds.

My invention comprises the use of separate actua-ting means,`one means moving the hood vertically and the other means moving it horizontally. In the preferred form, these `means consist of cylinders containing pistons operated by fluid pressure. Preferably, the cylinders are so connected that fluid under pressure passes from the vertical cylinder to the horizontal cylinder when the piston in the vertical cylinder has reached a 'predetermined height. Means are provided for selectively directing the fluid passing to the horizontal cylinder upon, either side of the piston therein.

I have illustrated a preferred embodiment of my invention in the accompanying'drawings, in which-l Figure" 1 is an elevation showing a valve equipped with "my operating mechanism; an

Figure 2 is a view of Figure 1 as seen from the left, certain parts being shown in section.

The passages 5, `6 and 7 serve to carry i The casting 8 is located above the openings of these passages and is provided with an outer rim 9 and inner rims 10,11 and 12 surrounding the-openingsN from passages 5, 6 and 7 respectively. The casting thus forms atrough adapted to contain water, the water entirely surrounding the three openings. The fixed cover 13 is provided with suitable doors 18 and 19 forinspection and cleaning purposes. The cover 13 encloses 4the valve hood 14; which latter is supported by plate 15 connected yto piston rod 16 by pin 17. The plate 15 moves in a longitudinal slot 20 in the top of the cover member 13.y The piston rodl 16 is connected to a piston "operating in the vertical cylinder `This cylinder 21 is supported from carriage 22, the carriage being provided with rollers 23 Which bear upon thelower flange shown) to the valve 81. erated by lever 32 pivoted at point 38. This llever 82 is connected by chains 84 and 35 to and operates valve A88.

of the Iebeam track 24. The track 24 is supported upon suitable `framing 25. The vertical cylinder 21 is connected by yoke 26 to the piston rod 27, which piston rod is .connected to a piston moving in rthe horizontal cylinder' 28. The horizontal cylinder 28 is suspended by brackets 29 from the I- beam 24.

Referring now particularly to Figure 2, the inlet passage 8() leads yfrom any .suitable source of compressed air or other fluid (not The valve 81 is op- Vwhich pipe 'isconnected by iiexible hose coupling 44'to inlet '45 upon the lower portion ofthe vertical cylinder 21. The valve V81 also connects the exhaust pipe 46. The

"outlet connection '47 upon the upper portion of the vertical cylinder 21 is connected by iexible hose 48 tothe pipe 49 whichv latter leads to valve 38. The pipe connects one opening Aor" the valve y38 with the right-hand end ofthe horizontal cylinder 28. The pipe `51 connects another opening of the valve 38 to the left-hand end of the vhorizontal cylinder and the valve 38 also connects with the exhaust pipe 52.

Theihood being in the right-.hand position as :shown in Figure 1,"the `shiftrto the lefthand position will be accomplished .by thrusting down upon the lever operating handle 89. Thisthrust will be transmittedV by chains 34 and 35 and both levers 32 and 'will swing in a clockwise direction'about 'their pivots.

Valverl is operated to Vconnect the air inlet 'pipe 30 tothe pipe 40 vand the compressed air 'flows Vthrough pipe 48 and 'hose i 44 to-"the' underside of the piston 'in the vthe depending` valve hood laterally as far as `the'd'otted line position oit' lFigure l1.

'vertical cylinder 21. When this piston rises to clear the port 47, zthe airpasses through hose 48 and lpipe 49 'to the valve 38. The.

valve y'38 has'been moved toy connect the pipe 49 tov the pipe 50, and the compressed airv lflows through the pipe 5() tothe horizontalv cylinder 28 where it thrusts against the piston and'moves the vertical cylinder '21 and "When the hood has reached thisposition, the handle -89'is brought back to kneutral which serves to close off the vair inlet passage 30 and to connect the pipe 40 with exhaust pipe '46 and vthe pipe 50 with the `exhaust pipe 52. Theweight ofthe valve exhausts "the air yfrom@the kVertical cylinder and the' valve is lowered into position, its lower edge'sbeing below the water lever in the casting 8.

Upon again reversing the furnace, the valve hood 14 is brought back to itsoriginal position by pulling upwardly upon the handle This results in Arotating the levers 82 and 36 Ain vthe counterclockwise direction. This movement of the valve levers serves to connectthe..airinlet 30 with the pipe 41 and rtical 4cylinder and depending valve back laterallv as Vtar as the 1full'line )osition of VFigure 1. Wlhen the valvereaches this position, the 'handle 39 .is 'lowered yto :neutral andthe passage `41 is connected by valve 31 `to the exhaust 'passage 4G and the khood 14 islowered-.into place. Simultaneously, pipe 51 is connected to exhaust passage 52 by valve 88'and the pressure is relieved vin that `cylinder.

My valve operating mechanism is thus put in motion in either direction by a single mover-nent ot an operating'handle. 4The connections are such vthat horizontal movement takes placeautomatically upon completion'of the proper vertical movement and cannot 'take -place until `such vertical 'moveiment is accomplished. This method oi movingithe valve permits the use .ofrela ltively high rims around. the gas openings which rims consequently withstand wear yfor a relatively long'period and avoid the necessity for "frequent renewal 'othefrim casting.

`It is tovbe understood that the 4particular vvform shown is illustrative only and l :reserve the right to .make such modilications as come within the 'scope ofl the appended claims.

I claim:

' 1. Reversing va'lve mechanism comprising 1a valve hoodymcansrtor movingsalid hood vertically anda second meanssadapted to move it .horizontally7 said means being interconnected whereby the. .second means becomes oper-ativenpon a predetermined' littvring movement vby the first means.

2. Reversing valve mechanism comprising a'valve hood, afiuidoperated piston adapted to move said hood' vertically7 "a second -iiuid operated piston adapted to move said hood horizontally, and interconnected operating vmeans for said pistons whereby Vthe horizontally acting pistonbecomes operative upon a predetermined movement 'bythe vertically J operati ng piston.

hood horizontally, means for supplying fluid` under pressure to said vertical cylinder, and means for automatically supplying fluid under pressure to said horizontal cylinder upon a predetermined movement of' said veri tical piston.

A4i. Reversing valve mechanism comprising a valve hood, a cylinder having a fluid operated piston therein adapted to move said hood vertically, a second cylinder having a fluid operated piston adapted to move the hood horizontally, means for supplying fluid under pressure to said vertical cylinder, and means for automatically passing said fluid under pressure from the vertical cylinder to said horizontal cylinder upon a predetermined movement of said vertical piston.`

5. Reversing valve mechanism comprising a valve hood, a cylinder having a luid operated piston therein adapted to move said hood vertically, a second cylinder having a fluid operated piston adapted to move the hood horizontally, means for supplying fiuid under pressure to said vertical cylinder and means for selectively passing the fluid under pressure from the vertical cylinder to either side of the piston in the horizontal cylinder.

k6. Reversing valve mechanism comprising a valve hood, a cylinder having a fluid operated piston therein adapted to move said hood vertically, a second cylinder having a fluid operated piston adapted to move the hood horizontally, means for supplying fluid under pressure to said vertical cylinder and means for selectively passing the fluid under pressure from the vertical cylinder to either side of the piston in the horizontal cylinder automatically upon a predetermined movement of the vertical piston.

Signed at St. Louis, Missouri, this 16th day of June, 1922.

JOHN A. MURPHY. 

